PHP 단위 테스트의 모의 및 스텁 기술

// 在 $object 中模拟 MyService 类
$mock = $this->getMockBuilder(MyService::class)
    ->disableOriginalConstructor()
    ->getMock();

// 设置 mock 方法的预期行为
$mock->expects($this->once())
    ->method('doSomething')
    ->with('arg1', 'arg2')
    ->willReturn('result');

// 与模拟对象交互并进行断言
$this->assertSame('result', $object->doSomething('arg1', 'arg2'));

// 为 $service 创建二重桩
$stub = $this->createMock(MyService::class);

// 设置实际依赖项，以便稍后断言
$object = new MyObject($stub);

// 与实际对象交互
$object->doSomething();

// 验证桩是否被调用
$this->assertTrue($stub->expects($this->once())
    ->method('doSomething')
    ->with('arg1', 'arg2')
    ->hasBeenCalled());

// 使用模拟来验证 calculateTotal()
$productServiceMock = $this->getMockBuilder(ProductService::class)
    ->disableOriginalConstructor()
    ->getMock();

$productServiceMock->expects($this->once())
    ->method('getProducts')
    ->willReturn([
        ['id' => 1, 'price' => 10],
        ['id' => 2, 'price' => 20]
    ]);

$total = calculateTotal($productServiceMock);

$this->assertEquals(30, $total);